Evaluation of Amplitude of Accommodation in a Presbyopic Patient Undergoing Stimulation of Sizhukong Acupuncture Point (TH23) – Case Report

Submit Manuscript | http://medcraveonline.com but Helmholtz’s hypothesis [5,6] is one of the most accepted theories that try to explain it. According to the Helmholtz ́s model, the contraction of the ciliary muscle would allow relaxation of crystalline capsule, which, by elastic contraction, would deform the lens, increasing its thickness and, therefore, the optical power. When the ciliary muscle relaxes, the zonular tension will increase, tensioning the lens. This tension reduces its anteroposterior dimension and increases the focal distance.